Odin is 11 months today. We just finished transitioning him onto boxer formula 26. He's coat looks amazing and his shedding has gone done considerably if not stopped completely. He WAS farting a lot during the transition but that has stopped. I love it... I think it would be okay to switch... we did. We were on Nutro Puppy Lamb (Meal) & Rice... losers changed their formula and Odin was shedding badly along with LOOSE stools. He's MUCH better now though.